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    <title>Document</title>
  </head>

  <body>
    <script>
      //   // forEach 迭代(遍历) 数组
      //   var arr = [1, 2, 3];
      //   var sum = 0;
      //   arr.forEach(function (value, index, array) {
      //     console.log("每个数组元素" + value);
      //     console.log("每个数组元素的索引号" + index);
      //     console.log("数组本身" + array);
      //     sum += value;
      //   });
      //   console.log(sum);

    //   var sum = [99, 1, 100];
    //   var num = 0;
    //   sum.forEach(function (value, index) {
    //     num += value;
    //   });
    //   console.log(num);



    //   var arr = [88,65,67,99,100]
    //   var num = arr.filter(function(value,index) {
    //       return value % 2 === 0
    //   })
    //   console.log(num);





      var arr = ['red','pink','blue']
      var num = arr.some(function(value) {
          return value === 'pink'
      })
      console.log(num);
    </script>
  </body>
</html>
